Uncle Tian (played by Liang Jiaren), Zei Zi (played by Andy Lau), Toupi (played by Liang Chaowei), Abang (played by Felix Wong), and Ahua (played by Michael Miu) are five policemen belonging to the same team. The five people work well together and have made great achievements. They are called the "Golden Five Tigers". In addition to being good colleagues, the five are also good brothers in private. Zei Zi and Toupi secretly accepted the black money from Uncle Tian's brother-in-law, the gang member traitor Dong (played by Kent Tong), and wanted to drag Uncle Tian, Abang and Ahua into the water. Except for Abang, the other two were all in the water. Everyone who accepted the black money had his own reasons. Uncle Tian wanted his daughter to live a better life and no longer have to be a hostess; Toupi wanted to send his younger brother to study in Canada; Ahua wanted to provide a future guarantee for his wife (played by Anita Mui) and son; and Zei Zi was living for the moment. Although Abang did not accept the black money, the guys all accepted it, and he had to be cautious about the gangsters, so the five people got deeper and deeper...